基于虚拟样机技术的70T级新型通用敞车抗疲劳设计

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1、分类号：UDC：U273．93Y1404967学校代号：10150密级：——学号：G2004005峡建交积挚工程硕士学位论文基于虚拟样机技术的70t级新型通用敞车抗疲劳设计ANTI-FATIGUEDESIGNON70TNEWTYPEGENERALPURPOSEUSEOPENTOPWAGONBASEDoNVIRTUALMODELMACHINETECHNOLOGY学生姓名：校内导师及职称：企业导师及职称：工程领域：研究方向：申请学位：论文答辩日期：学位授予单位：关晓丽兆文忠教授范国海高工车辆工程车辆CAE关键技术工程硕士

2、2008年6月12日大连交通大学大连交通大学工程硕士学位论文AbstractWithimplementationofstridedevelopmentstrategyforChinaRailways，aseriesofheavyhaulbrandnewproductsrunningathigherspeedhavebeengivenbirthtothemarketinrailwayindustry．Sincethesenewproductsputintoservice，theproblemoffatiguebreak

3、agehasbecomemoreprominentthanbefore．Hence，fordevelopmentof70tnewtypegeneralpurposeuseopentopwagon，ifthetraditionalstaticstrengthdesignphilosophywereusedforproductdesign，itwouldinevitablyresultinmuchmorestaticstrengthoftheproductstructureavailable，butinsufficien

4、tfatiguestrengthexistingthere，whichwouldbringintheserioussafetydangertothereliableserviceoftheproduct．Therefore，itisofgreatsignificanceinrealityincarryingoutanti—fatiguedesignonwagonbodyof70tnewtypegeneralpurposeopentopwagonbasedonvirtualmodelmachinetechnology．

5、Thispaperpresentsthemajorresearchandstudyon70tnewtypegeneralpurposeUseopentopwagoninthefollowingaspects、Ⅳitllcarefulstudyofkeytechnicalknow—howofvirtualmodelmachinetechnology，thatistosay，onthebasisofperformancesimulationtechnology：Atfirst，consideringthestructur

6、efeatureandtechnicalparametersof70tnewtypegeneralpurposeuseopentopwagon，thedetailedFEAmodelisestablishedforthewagonbody．Thenthestaticstrengthanalysisandmodularanalysisisdoneonthemodelinaccordance、崩tllTB／T1335-1996“StrengthDesignandTestAccreditationSpecification

7、forRailwayRollingStock”．Thepositionofthewagonbodyforthecrackmoreeasilyoccurringisfinalizedonthebasisoftheresultofstaticstrengthanalysisandweldingtypesforthestructure．Secondly，theanti—fatiguedesignontheweldingseamonthekeypositionofwagonbodyfor70tnewtypegeneralpu

8、rposeuseopentopwagonisperformedbasedontheresultsoffiniteelementstaticstrengthanalysis，aspervariousloadspectrumsinAARstandardandduedynamicstressVStime，thencharacteristiccalve